New Jersey Sen. Lautenberg Won't Seek Re-Election

WASHINGTON—Sen. Frank Lautenberg, the 89-year-old New Jersey Democrat who has been a reliable liberal voice in the Senate, said Thursday he won't seek re-election in 2014.

Mr. Lautenberg's retirement sets up what is likely to be a competitive race for the seat. Newark Mayor Cory Booker has already announced plans to run in a Democratic primary. Fellow Democratic Rep. Frank Pallone has also been considering a bid for the seat, along...